Fits 2003-2004 Ford Modular 4.6L supercharged engines.

Protect your engine's bottom end from the stresses of high-boost applications with the ARP Main Stud Kit. This kit is specifically designed for the Ford 4.6L 2-bolt main block configuration and provides the superior clamping force needed to prevent main cap walk and fretting under extreme cylinder pressures.

Unlike factory bolts, these ARP studs are manufactured from high-strength alloy and are designed to accommodate the factory windage tray, ensuring proper oil control without sacrificing fastener integrity. Each stud is heat-treated and centerless ground to ensure perfectly concentric threads and consistent torque loading during assembly.

• Fits 2003-2004 Ford 4.6L Modular Supercharged engines
• Configuration: 2-Bolt Main with Windage Tray
• Includes all necessary studs and hardware for a complete installation
• Manufacturer Part Number: 156-5403

The ARP 156-5401 Main Stud Kit is engineered to provide the superior clamping force required to secure the crankshaft and main caps in Ford Modular 4.6L 2V engines equipped with 2-bolt mains. Replacing the factory hardware with high-strength studs ensures more accurate torque loading and helps eliminate main cap movement under high loads or increased RPM.

• Fits Ford Modular 4.6L 2V engines with 2-bolt main caps
• Provides consistent and repeatable clamping force for bottom-end stability
• Designed for high-performance applications where OE bolts may fail
• Includes high-strength studs, parallel-ground washers, and nuts
• Manufacturer Part Number: 156-5401

Ensure the structural integrity of your engine's bottom end with the ARP Main Cap Side Bolt Kit (156-5202), specifically engineered for late Ford Modular V8 cast iron blocks. These M9 side bolts provide the critical clamping force necessary to prevent main cap walk, an essential requirement for high-performance, high-RPM, or forced induction builds.

As a direct replacement for factory side bolts, this high-strength hardware kit is manufactured to ARP's exacting tolerances to offer superior reliability. Proper main cap securement is vital for maintaining precise bearing alignment and protecting the crankshaft under extreme rotational loads.

• Specifically for Ford Modular V8 late cast iron blocks
• M9 thread diameter for side-mount applications
• Prevents main cap movement to ensure crankshaft and bearing longevity
• Includes all necessary side bolts for a complete main cap installation
• Manufacturer Part Number: 156-5202

Reinforce your engine's bottom end with the ARP 156-5201 Main Cap Side Bolt Kit, specifically engineered for early cast iron block Ford Modular V8 engines. These M8 side bolts provide the critical clamping force required to secure the main caps to the block, effectively minimizing cap walk and protecting your main bearings during high-performance use.

ARP fasteners are manufactured to exacting tolerances, offering significantly higher tensile strength than factory hardware. This kit is a direct replacement for the original equipment side bolts, ensuring a precise fit and reliable service under the stresses of high-RPM or forced-induction applications.

• Fits Ford Modular V8 engines with early cast iron blocks
• Part Number: 156-5201
• Thread Size: M8
• Increases block rigidity and main cap stability
• High-strength fastener construction for superior fatigue resistance

Ensure bottom-end stability and maintain precise bearing alignment in your Ford Modular V8 engine with the ARP 156-5002 Main Cap Side Bolt Kit. Specifically engineered for late-model aluminum blocks utilizing M9 thread side bolts, this kit provides the superior clamping force required to prevent main cap walk during high-stress operation.

Unlike factory torque-to-yield fasteners which require replacement after every use, these ARP fasteners are manufactured for extreme durability and reusability. They are a critical upgrade for any performance rebuild, providing the structural integrity needed to support increased horsepower and RPM levels.

• Fits Ford Modular V8 engines with late aluminum blocks
• Thread Size: M9
• Manufacturer Part Number: 156-5002
• Maintains main cap stability and prevents cap walk
• Precision-engineered for consistent torque loading
• Replaces factory side bolts for improved bottom-end rigidity

Ensure the structural integrity of your engine's bottom end with the ARP 156-5001 M8 Main Cap Side Bolt Kit. Engineered specifically for early Ford Modular V8 aluminum blocks, these side bolts provide the critical clamping force necessary to prevent main cap walk during high-RPM or high-load operation.

ARP fasteners are manufactured from premium alloys that far exceed OEM specifications, offering superior tensile strength and fatigue resistance. This kit is a vital upgrade for performance rebuilds, providing the stability required to maintain precise bearing clearances and protect your rotating assembly.

• Fits Ford Modular V8 early aluminum blocks
• Thread Size: M8
• Prevents main cap movement and fretting
• High-strength construction for increased bottom-end rigidity
• Includes all necessary side bolts for a complete installation
• Manufacturer Part Number: 156-5001

The ARP 154-5410 Main Stud Kit is specifically engineered for Ford 302 Small Block engines utilizing a main cap girdle. High-performance builds demand superior bottom-end stability to prevent main cap walk and fretting under heavy loads. These studs provide the precise clamping force and alignment necessary to secure the rotating assembly when a girdle is installed.

• Compatible with Ford 302 Small Block engines
• Designed specifically for use with main cap girdles
• Provides superior strength and consistent torque loading compared to standard bolts
• Essential for high-RPM or forced induction Small Block Ford builds
• Manufacturer Part Number: 154-5410

Fits Ford 4.0L XR6 Inline 6-cylinder engines.

The ARP 152-5402 Main Stud Kit is a critical upgrade for high-performance Ford 4.0L XR6 engine builds. By replacing the factory main cap bolts with high-strength studs, you significantly increase the clamping force on the main bearing caps. This prevents "cap walk" and maintains proper bearing alignment under high-RPM or high-boost conditions where OE fasteners are prone to stretching.

Engineered for superior fatigue strength and durability, these studs provide consistent loading and allow for more accurate, repeatable torque readings during the assembly process. This kit is essential for ensuring the structural integrity of the bottom end in street, strip, or circuit-track applications.

• Manufacturer Part Number: 152-5402
• Engine Fitment: Ford 4.0L XR6 Inline 6
• Eliminates main cap movement and protects the crankshaft
• Includes premium-grade studs, parallel-ground washers, and high-strength nuts
• Ideal for forced induction and high-horsepower engine builds

Fits Ford 2.3L EcoBoost engines.

The ARP Main Stud Kit (151-5407) is a critical upgrade for high-performance builds and engine refreshes. Designed to provide superior clamping force compared to factory bolts, these studs ensure the main caps remain securely seated under high cylinder pressures. By maintaining precise alignment of the crankshaft and preventing main cap walk, this kit protects your bottom end during high-RPM or forced induction operation.

• Provides consistent clamping force for improved bottom-end stability
• Replaces factory main cap hardware to prevent cap movement and misalignment
• Engineered for the specific tolerances of the Ford 2.3L EcoBoost block
• Includes all necessary studs, parallel-ground washers, and nuts
• Manufacturer Part Number: 151-5407

Fits Ford Duratec (2.3L) engines.

Ensure the structural integrity of your engine's bottom end with the ARP 151-5405 Main Stud Kit. Designed to replace factory main bolts, these high-strength studs provide significantly more consistent clamping force on the main caps. This prevents main cap walk and movement under high-RPM or high-load conditions, protecting your crankshaft and main bearings from premature wear.

ARP studs are precision-machined to exacting tolerances, offering superior reliability compared to OE hardware. They are a critical upgrade for performance builds where increased cylinder pressure and rotational stress demand a more robust fastening solution.

• Manufacturer Part Number: 151-5405
• Application: Ford Duratec 2.3L engines
• Increases block rigidity and prevents main cap walk
• Higher tensile strength and more accurate torque loading than factory bolts
• Complete kit includes all necessary studs, washers, and nuts

Fits 2000-2004 Ford Focus LX (2.0L).

The ARP 151-5404 Main Stud Kit provides the essential bottom-end clamping force required for high-performance Ford 2.0L Zetec engines. By utilizing high-strength studs rather than factory bolts, you ensure more accurate torque loading and virtually eliminate the main cap walk that can lead to catastrophic bearing failure under high-RPM or high-boost conditions.

Each stud is manufactured from premium 8740 chrome moly steel and heat-treated to 200,000 psi tensile strength. To ensure maximum fatigue life and thread integrity, the threads are rolled after the heat-treatment process. This kit is an essential upgrade for any engine rebuild where reliability and structural integrity are priorities.

• Manufacturer Part Number: 151-5404
• Material: 8740 Chrome Moly Steel
• Tensile Strength: 200,000 psi
• Design: 98+ Ford 2.0L Zetec Platform
• Includes all necessary studs, parallel-ground washers, and 12-point nuts

Strengthen the bottom end of your engine with the ARP Main Stud Kit (150-5801), engineered specifically for select Ford (6.0L) applications. These high-strength fasteners provide significantly higher clamping force than factory main bolts, effectively preventing main cap walk and protecting your crankshaft and block during high-performance or heavy-duty operation.

• Fits select Ford engines (6.0L)
• Superior strength and fatigue life compared to OE fasteners
• Precision-machined to ensure accurate torque readings and consistent clamping
• Replaces factory main cap bolts for increased bottom-end stability
• Includes all necessary studs and hardware for installation
• Manufacturer Part Number: 150-5801

Fits 1995-2005 Dodge Neon models across all trims, including Sport, R/T, and SRT-4 (SOHC and DOHC engines).

The ARP 141-5801 Main Stud Kit is a critical upgrade for stabilizing the bottom end of your Dodge Neon engine. In high-performance or high-mileage applications, factory main bolts can stretch or allow main cap movement, leading to bearing wear and alignment issues. This kit replaces the original hardware with high-strength studs that provide superior clamping force and more accurate torque loading.

By using studs instead of bolts, the fastener is loaded only in the vertical axis during installation, protecting the threads in your engine block and ensuring the main caps remain perfectly seated. This is essential for preventing main cap walk in boosted SRT-4 builds or high-revving SOHC/DOHC naturally aspirated setups.

• Manufacturer Part Number: 141-5801
• Engine Compatibility: Fits both SOHC and DOHC 2.0L and 2.4L platforms
• Vehicle Fitment: 1995-2005 Dodge Neon (All Submodels)
• Function: Secures engine main caps to the block for improved crankshaft stability
• Construction: Premium high-strength fasteners engineered for maximum fatigue resistance

Secure your engine's bottom end with the ARP 134-5202 High Performance Series main bolt kit. Engineered specifically for Small Block Chevy (SBC) engines with 4-bolt main caps, these fasteners provide the superior clamping force necessary to prevent main cap walk and crankshaft misalignment during high-RPM operation or high-load applications.

Every bolt in this kit is manufactured from premium 8740 chrome moly steel and heat-treated to a 180,000 psi tensile strength. Unlike inferior fasteners, ARP rolls the threads after heat treatment, resulting in significantly improved fatigue strength and thread consistency. This kit is a direct upgrade for factory hardware, ensuring a precise and repeatable torque sequence for your engine build.

• Fits Small Block Chevy (SBC) 4-bolt main engine blocks
• Constructed from 8740 chromoly steel with a black oxide finish
• Rated at 180,000 psi tensile strength
• Precision J-form threads rolled after heat treatment for maximum durability
• Includes all required bolts and hardened parallel-ground washers
• Manufacturer Part Number: 134-5202

Reinforce your Nissan's engine bottom end with the ARP Main Stud Kit, engineered for 3.0L VG30DE and VG30DETT DOHC V6 engines. This kit replaces the factory main bolts with high-strength studs, designed to provide superior and more consistent clamping force on the main bearing caps. This is crucial for engine builders pushing higher horsepower, boost, or RPMs, as it helps prevent crankshaft walk and maintains bearing clearances under extreme loads.

ARP main studs offer several advantages over traditional main bolts:

• Increased Clamping Force: Studs provide a more accurate and consistent torque load, reducing cap flex.
• Improved Fastener Life: The stud remains stationary during torqueing, reducing wear and tear on the block threads.
• Enhanced Durability: ARP's proprietary manufacturing process ensures high tensile strength and fatigue resistance.
• Reusable: Unlike TTY (torque-to-yield) bolts, these studs are fully reusable, making future engine servicing more straightforward.

Each kit includes the necessary main studs, washers, and nuts, providing a complete solution for upgrading your engine's foundation. Trust ARP for the ultimate in engine fastener reliability.

• Manufacturer Part Number (MPN): 102-5402
• Engine Fitment: Nissan 3.0L VG30DE, Nissan 3.0L VG30DETT (DOHC V6)

Fits select 1989-2004 Nissan 240SX, Altima, Axxess, D21, Frontier, Pickup, Stanza, and Xterra (2.4L).

The ARP Main Stud Kit is a vital upgrade for high-performance Nissan KA24E and KA24DE 2.4L engine builds. Designed to provide superior clamping force compared to factory main bolts, these studs effectively eliminate main cap walk and help prevent fretting of the block's main bearing surfaces. This ensures a stable and durable bottom end, even under the increased cylinder pressures of turbocharged or high-compression naturally aspirated applications.

• Specifically engineered for Nissan 2.4L KA-series 4-cylinder engines
• Provides consistent and accurate torque loading for improved engine longevity
• Includes all necessary high-strength studs, parallel-ground washers, and nuts
• Manufacturer Part Number: 102-5401